Select all statements that correctly describe hemoglobin and myoglobin structure. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron. Molecular oxygen binds irreversibly to the Fe(II) atom in heme. Hemoglobin and myoglobin are heterotetramers. The heme prosthetic group is entirely buried within myoglobin. Each iron atom can form six coordination bonds. One of these bonds is formed between iron and oxygen. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind one oxygen molecule. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron (Fe) atom. 0000

Select all statements that correctly describe hemoglobin and myoglobin structure. By itself, heme is not a good oxygen carrier. It must be part of a larger protein to prevent oxidation of the iron. Molecular oxygen binds irreversibly to the Fe(II) atom in heme. Hemoglobin and myoglobin are heterotetramers. The heme prosthetic group is entirely buried within myoglobin. Each iron atom can form six coordination bonds. One of these bonds is formed between iron and oxygen. Each hemoglobin molecule can bind four oxygen molecules; each myoglobin can bind one oxygen molecule. Both hemoglobin and myoglobin contain a prosthetic group called heme, which contains a central iron (Fe) atom. 0000

Human Physiology: From Cells to Systems (MindTap Course List)

9th Edition

ISBN:9781285866932

Author:Lauralee Sherwood

Publisher:Lauralee Sherwood

Chapter11: The Blood

Section: Chapter Questions

Problem 1SQE

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In addition to O2 binding, changes in other chemical conditions can result in changes in hemoglobin structure and function. Increases in blood H+ result in oxygen binding curves for hemoglobin that are shifted to the right. The effect of H+ can be understood in terms of the equilibrium:H-Hb+ + O2 → Hb-O2 + H+How does the difference in pH in the lungs and tissues help hemoglobin do its job of delivering oxygen? Use the equilibrium equation in your argument.
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